Abstract: An electrical insulation system includes a first insulation layer having a first polymer and a first filler in the form of nanoparticles, and a second insulation layer including a second polymer and a second filler in the form of either chromium oxide, Cr2O3, iron oxide, Fe2O3, or a mixture of chromium oxide and iron oxide. At least one of the insulation layers is in the form of a solid and flat sheet. An insulation system combining the first insulation layer with well dispersed nanoparticles and the second insulation layer filled with Cr2O3particles and/or Fe2O3 particles.

Abstract: An electrical conductor provided with an electrical insulation system surrounding the conductor, the insulation includes a first insulation layer surrounding the conductor and a second insulation layer surrounding the first insulation layer. The second insulation layer includes a second polymer and a second filler in the form of chromium oxide (Cr2O3), iron oxide (Fe2O3), or a mixture of chromium oxide and iron oxide, wherein the first insulation layer includes a first polymer and a first filler including dispersed nanoparticles.

Abstract: An electrical insulation system includes a first insulation layer having a first polymer and a first filler in the form of nanoparticles, and a second insulation layer including a second polymer and a second filler in the form of either chromium oxide, Cr2O3, iron oxide, Fe2O3, or a mixture of chromium oxide and iron oxide. At least one of the insulation layers is in the form of a solid and flat sheet. By an insulation system combining the first insulation layer with well dispersed nanoparticles and the second insulation layer filled with Cr2O3 particles and/or Fe2O3 particles, a synergetic effect of the two insulation layers provides an excellent shield and resistance of the insulation system against electrical discharges. The sheet material allows anybody to put together an insulation system without any special equipment.

Abstract: An electrical conductor provided with an electrical insulation system surrounding the conductor, the insulation includes a first insulation layer surrounding the conductor and a second insulation layer surrounding the first insulation layer. The second insulation layer includes a second polymer and a second filler in the form of chromium oxide (Cr2O3), iron oxide (Fe2O3), or a mixture of chromium oxide and iron oxide, wherein the first insulation layer includes a first polymer and a first filler including dispersed nanoparticles.

Abstract: A method and device for evaluating the capacity of a compressor (1) by air being allowed to flow out from a pressure tank (3) through an opening of known geometry. Following a calculation, the quantity of evacuated air is obtained. After this, a compressor (1) pumps back up to the initial pressure in the pressure tank (3). The compressor capacity (1) is established by comparing the time it takes for the compressor (1) to pump back up to the initial pressure in the pressure tank (3) with the time it takes when an acceptable compressor (1) pumps the same quantity of air. By the compressor capacity (1) is here meant the quantity of air which the compressor (1) delivers per unit of time at a given compressor speed and counter-pressure.

Abstract: The invention relates to a voltage source converter system, comprising a plane parallel bus bar assembly having conductor bars (4, 5, 6) closely related for reducing induced voltage in the assembly. Each gap that is formed between adjacent conductor bars is completely filled by a polymer insulator (8, 9) which is formed for providing complete freedom of access to fully exposed external sides of said bus bar assembly. The invention also relates to a molded, single piece polymer insulator comprising an elongate rib member (10) of continuous height and thickness, and elongate wing members (11, 12) angularly extended from each longitudinal periphery of the rib member.

Abstract: The present invention provides methods of inducing in vivo migration and proliferation of progenitor cells transplanted to the brain. Isolation, characterization, proliferation, differentiation and transplantation of mammalian neural stem cells are also disclosed.

Abstract: A rotating electric machine and method for manufacturing the same in which a high-voltage cable is wound in a stator so as to make a winding. A feature of the high-voltage cable is that the cable includes an inner semiconducting layer, a solid insulation material, and an outer semiconducting layer. A casting compound is supplied in a slot that holds the cable in the stator so as to avoid damaging an outer surface of the cable.

Abstract: An arrangement with a conductor (15) intended to be on a high potential and a part (12) connected to ground and separated therefrom by at least a voltage receiving air gap (16, 17), comprising an insulating envelope (18) surrounding said conductor and at least a first member (9) of electrical insulating material arranged to screen off said ground part from said conductor. Said air gap is dimensioned to get such a high electrical field strength by possible sudden, strong voltage raises of said conductor, that air molecules in said air gap will be ionized. Said insulating envelope (18) and the insulating member (9) have surfaces arranged to receive electrical charges generated through said ionizing for creating a voltage over their thicknesses and decreasing the voltage drop in the air gap between the conductor (15) and the ground part (12).

Abstract: In a transformer or a reactor having at least one winding of foil-formed electrical conductor material, a magnetic-flux-controlling spirally-wound sheet of highly permeable ferro-magnetic material is arranged axially outside each end of the winding. The ends of the sheet are galvanically connected to the foil winding. By division of the magnetic material in the sheet, a high resistance in the longitudinal direction of the sheet, and thus lower losses, are obtained.